<html>

<head>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>【每日一练】58— 写一个登录和注册页</title>
  <link rel="stylesheet" type="text/css" href="style.css">
</head>
<style>
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
  }

  section {
    position: relative;
    min-height: 100vh;
    background: #00a6bc;
    display: flex;
    padding: 20px;
    justify-content: center;
    align-items: center;
    transition: 0.5s;
  }

  section.active {
    background: #006abc;
  }

  section .container {
    position: relative;
    width: 800px;
    height: 500px;
    background: #fff;
    box-shadow: 0 15px 50px rgba(0, 0, 0, .1);
    overflow: hidden;
  }

  section .container .user {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
  }

  section .container .user .imgBx {
    position: relative;
    width: 50%;
    height: 100%;
    background: #ff0;
    transition: 0.5s;
  }

  section .container .user .imgBx img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  section .container .user .formBx {
    position: relative;
    width: 50%;
    height: 100%;
    background: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    transition: 0.5s;
  }

  section .container .user .formBx form h2 {
    font-size: 18px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-align: center;
    width: 100%;
    margin-bottom: 10px;
    color: #555;
  }

  section .container .user .formBx form input {
    width: 100%;
    padding: 10px;
    background: #f5f5f5;
    color: #333;
    border: none;
    outline: none;
    box-shadow: none;
    font-size: 14px;
    margin: 8px 0;
    letter-spacing: 1px;
    font-weight: 300;
  }

  section .container .user .formBx form input[type="submit"] {
    max-width: 100px;
    background: #677eff;
    color: #fff;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    transition: 0.5s;
  }

  section .container.active .user .formBx form input[type="submit"] {
    background: #e73e49;
  }

  section .container .user .formBx form .signup {
    position: relative;
    margin-top: 20px;
    font-size: 12px;
    letter-spacing: 1px;
    color: #555;
    text-transform: uppercase;
    font-weight: 300;
  }

  section .container .user .formBx form .signup a {
    font-weight: 600;
    text-decoration: none;
    color: #677eff;
  }

  section .container .signupBx {
    pointer-events: none;
  }

  section .container.active .signupBx {
    pointer-events: initial;
  }

  section .container .signupBx .formBx {
    top: 100%;
  }

  section .container.active .signupBx .formBx {
    top: 0%;
  }

  section .container .signupBx .imgBx {
    top: -100%;
  }

  section .container.active .signupBx .imgBx {
    top: 0%;
  }

  section .container .signinBx .formBx {
    top: 0;
  }

  section .container.active .signinBx .formBx {
    top: 100%;
  }

  section .container .signinBx .imgBx {
    top: 0;
  }

  section .container.active .signinBx .imgBx {
    top: -100%;
  }

  @media (max-width: 991px) {
    section .container {
      max-width: 400px;
    }

    section .container .imgBx {
      display: none;
    }

    section .container .user .formBx {
      width: 100%;
    }

    section .container.active .signinBx .formBx {
      top: -100%;
    }
  }
</style>

<body>
  <section>
    <div class="container">
      <div class="user signinBx">
        <div class="imgBx"><img src="img1.jpg"></div>
        <div class="formBx">
          <form>
            <h2>登 陆</h2>
            <input type="text" name="" placeholder="用户名">
            <input type="password" name="" placeholder="密码">
            <input type="submit" name="" value="登陆">
            <p class="signup">没有帐户？ <a href="#" onclick="toggleForm();">注 册</a></p>
          </form>
        </div>
      </div>
      <div class="user signupBx">
        <div class="formBx">
          <form>
            <h2>创建一个帐户</h2>
            <input type="text" name="" placeholder="Username">
            <input type="email" name="" placeholder="">
            <input type="password" name="" placeholder="Create Password">
            <input type="password" name="" placeholder="Confirm Password">
            <input type="submit" name="" value="注册">
            <p class="signup">已经有一个帐户？ <a href="#" onclick="toggleForm();">登 陆</a></p>
          </form>
        </div>
        <div class="imgBx"><img src="img2.jpg"></div>
      </div>
    </div>
  </section>
  <script type="text/javascript">
    function toggleForm() {
      var container = document.querySelector('.container');
      var section = document.querySelector('section');
      container.classList.toggle('active')
      section.classList.toggle('active')
    }
  </script>
</body>

</html>